* +config.eager_load_paths+ accepts an array of paths from which Rails will eager load on boot if cache classes is enabled. All elements of this array must also be in +load_paths+.
* +config.encoding+ sets up the application-wide encoding. Defaults to UTF-8.
* +config.filter_parameters+ used for filtering out the parameters that you don't want shown in the logs, such as passwords or credit card numbers.
* +config.log_level+ defines the verbosity of the Rails logger. In production mode, this defaults to +:info+. In development mode, it defaults to +:debug+.
